2 * Empire - A multi-player, client/server Internet based war game.
3 * Copyright (C) 1986-2005, Dave Pare, Jeff Bailey, Thomas Ruschak,
4 * Ken Stevens, Steve McClure
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation; either version 2 of the License, or
9 * (at your option) any later version.
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
16 * You should have received a copy of the GNU General Public License
17 * along with this program; if not, write to the Free Software
18 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
22 * See the "LEGAL", "LICENSE", "CREDITS" and "README" files for all the
23 * related information and legal notices. It is expected that any future
24 * projects/authors will amend these files as needed.
28 * payo.c: Calculate trade ship payoffs
30 * Known contributors to this file:
31 * Thomas Ruschak, 1992
56 if (!opt_TRADESHIPS) {
57 pr("Tradeships are not enabled.\n");
60 if (!snxtitem(&ni, EF_SHIP, player->argp[1]))
64 while (nxtitem(&ni, &ship)) {
65 if (!player->owner || ship.shp_own == 0)
67 if (ship.shp_type < 0 || ship.shp_type > shp_maxno) {
68 pr("bad ship type %d (#%d)\n", ship.shp_type, ni.cur);
71 mp = &mchr[(int)ship.shp_type];
73 if (!(mp->m_flags & M_TRADE))
79 pr("shp# ship type orig x,y x,y dist $$\n");
82 pr("%3d ", ship.shp_own);
84 pr("%-16.16s ", mchr[(int)ship.shp_type].m_name);
85 if (ship.shp_own != ship.shp_orig_own && !player->god) {
86 /* Don't disclose construction site to pirates! */
88 prxy("%4d,%-4d ", ship.shp_x, ship.shp_y, player->cnum);
92 prxy("%4d,%-4d ", ship.shp_orig_x, ship.shp_orig_y, player->cnum);
93 prxy("%4d,%-4d ", ship.shp_x, ship.shp_y, player->cnum);
95 getsect(ship.shp_x, ship.shp_y, §);
97 dist = mapdist(ship.shp_x, ship.shp_y,
98 ship.shp_orig_x, ship.shp_orig_y);
101 if (dist < trade_1_dist)
103 else if (dist < trade_2_dist)
104 cash = (1.0 + trade_1 * ((float)dist));
105 else if (dist < trade_3_dist)
106 cash = (1.0 + trade_2 * ((float)dist));
108 cash = (1.0 + trade_3 * ((float)dist));
111 cash *= (((float)ship.shp_effic) / 100.0);
113 if (sect.sct_own && (sect.sct_own != ship.shp_own))
114 cash *= (1.0 + trade_ally_bonus);
115 pr("$%6.2f\n", cash);
119 pr("%s: No ship(s)\n", player->argp[1]);
121 pr("%s: No ship(s)\n", "");
124 pr("%d ship%s\n", nships, splur(nships));